The phrase "of no practical use" is correct and usable in written English.
You can use it when you want to describe something that has no purpose or utility. For example: "The broken radio was of no practical use, so I decided to throw it away."
The majority of the data-set (21 of 33) were obtained from a previous collation [1]: networks were only omitted from that prior data-set if neither Cws or CΔ were available for them (and hence were of no practical use to us here).
Seven years ago, they were already telling us that such games were of "no practical use to the elderly"; I remember that story because it was illustrated by a photograph of Nicole Kidman.
Right now it is of no practical use, Dr. Rosenblatt conceded, but he said that one day it might be useful to send one into outer space to take in impressions for us.
The work was regarded as a tour de force of experimental physics, but of no practical use.
And, even if it does, this theory will come in such a bewildering number of versions that it will be of no practical use: a Theory of Nothing.
Goldbach's conjecture is the type of thing that moved Hardy to write his apology, for it is a problem (at least before the prize was established) of no practical use whatsoever.
At the same time, a July 2010 US Government Accountability Office GAOO) report on DTC-GT was released that found that consumers had received DNA-based risk predictions that were misleading and of little or no practical use [ 54].
The majority of the population has no practical use for a distance wheel.
But then the lawyers could turn it around and point out that 99% of what we discover has no practical use.
While large collections of modules are usually of no immediate practical use, they can be flexibly transformed into smaller outputs of particular interest since they cover the maximum amount of functionalities that can be inferred from the underlying datasets.
It's too shallow to be of any practical use for storing excess carbon in volume.
